Transformer-pole.



E. 0. SCHWEITZER.

TRANSFORMER POLE.

APPLIcAnoN FILED m2, 1913.

Patented Nov. 30, 1915.

3 SHEETS-SHEET l.

E. O. SCHWEITZER.

TRANSFORMER POLE. APPLICATION FILEDJANJ, 1913.

Patentrd, Nov. 30, 1915.

3 SHEETS-SHEET 2.

E. O. SCHWEITZER.

TRANSFORMER POLE.

APPLICATION FILED 1AN.2,1913.

Patented Nov. 30, 1915.

3 SHEETS-SHEET 3A A EDMND o. sCHWErrzER, oF CHICAGO, ILLINOIS.

.TRANSFORMR-POLE.

Specification of Letters Patent.

ratenteaxov.30,1915.

ppii'eation filed January 2, 1913. seran No. 739,624.

To all 'whom iitvmai/ concern SCnii/nrrzrzn, acitiz-en of the UnitedStates, residingat--Chieago ,in the. county of Cook` 'and- State ofIllinois,'-ha've invented a cerdrawings, formingafpartof thissigieciiealmay `be placed near lthe bottom of the pole.

I have v'provideda siiitable opening in t-lie pole?whichlis'closedf'by adoor' so that ready access'inayf behadlto the transformer and the fuseblooksf'whieh are'supported by the pole. My-inver'ition'obviates thevnecessity of placing the @transformer at the top ofthepole-fas isnecessary in the present.. system of distributing'eurrent to Consumers.;The pole'V is arranged so vthat it forms the casing for thetrar'isfr'mer and-'contains insulating oil which maybeijofany volumeAdesired since there is provided available space for that purpose. Y

In one 'embodiment 'of .my invention 'the secondary wires are connected'at vthe top of the poleand vleadv 'downward to the trans'-for1n'e'r."-The primary-wires, on the other tures such as 'are presentin the ordinary construction ,asv now in-use.

hand, whieli'eXtend from' the transformer, lead downward and areconnected to the primary cable which is laid 1na suitable con- Theadvantage of my invention is that the appearance of 'the poleV isgreatlyenhanced inasmuch as 'thereare no obiectionable fea- Anothergfeatureofmy invention is that the transformer is'proteeted from lightning to alarge extent,' ow i n to its position in the pole, and'also vto :thefact that the pole which formsits casing is connected vto the ground andtherefore, actsl to some extent as a lightning :rrrresterll l NlyVinvention .also provides an arrangement by which transformers can beeasily .installed and removed with a iiiinimirm loss of time o wiiigtothe accessibility of the transformer near the-base of 'the pole Anadditional feature whien my invention provides is the fact that thecapacity ot the transformer per uiiit of active weight can be maderelatively large owing-'tm the large amoiintotI Space available ltransformer pole. Y

Mv invention will be -betteriinderstood by referring to the accompanyingdrawings iii whieli- Figure 1 iS anelevational view of apolc embodyingthe features of'in'y' invention. Fig. is a cross-sectional view taken`onl line 2 2 of Fig. 1. Fig. 3 is a vvcross-sectional view taken online 3-.3 of '1"igl'-2, Sonie of the parts being removed in' order toclearly lshow the arrangement. Fig'. 4 is a cross-sectional 'vieivtakenon 1i`ne 4 -4 ot'l Fig.v 2. Fig. 5 is an elevational viewofi'thetransformer forming part of'iny-in-vention-.- '"-l"ig.

6 is an end'view 'of Fig. 5,'one`ot tlie \sliiel ls being shown iiicross-section.l Figi -7 is a.

bottom v 'ie'w of the transformer; j FigrSis a top View thereof. Figst)illustrates theconv nections of the Secondary viii-es with the primarycoils connected to the niain supply wires and the two secondary coilshaving three lead wires vextendinggtl'ierefixim. 'Fig.

11 is'a top view of 'the coiinecti'ir' which is disposed at the top ofthe pole'and to which Suitable eonnecting'pieces arearranged be-v tweeneach of these Sections So as to make the pole more or llessoinaii'ientali-the whole institutingr a rigid Structurewhich isdiii'able and serves the purpose of l"siiiiiioiftinf; the \\'iie.'s atthe top i'ir'fi'dtli':tranfiniei :it the bottom. Thetojseet io`n 'oftlicpole, I` has inserted therein a connector 17, as Shownv in Figs. Zand 3.

It will be observed vthattliere is a long for oiifavithiii the "ivoYsecondary` coils on the transf'orme'r'. Ifi'g. 10 is a diagrammaticview showing the" three' bearing engagement between this section and thelowermost portion of the connector. This connector as shown in detail inFigs. 11 and 12, has an upper portion- 19, which has fastened thereto atdifferent portions thereof plates 20,121 and 22. VEach of these platesis provided with a loop 23, extending into a recess in the portion 19,as shown clearly in Fig. 11,'. and these loops are .arranged to receivethe ends of the connecting rods 24, which lead' upwardly through theconnector 17. This connector, it may be stated, may be of insulatingmaterial such as fiber .or wood.

'lhe plates, 20, 21 and are held in position at one offtheir respectiveends by bolts 25, .26 and 27, which pass through the connector 17, andat their other ends by bolts 28, 29 and 30. Four suitable connectionsare thus provided for each plate, for the secondary lead wires whichextend 1to the consumers. T he bolts 28, 29 and 30 are held securely inthe connector by means of suitable nuts 31, 32 and 33, which aredisposed at each side of the portion 19, and which are tightened againstsuitable washers so as to form a rigid connection. and washers hold thebolts 25, 26 and 27 in place. The connecting plates 20, 21 and 22 areprovided with suitable openings, through which the bolts 25, 2G, 27, 28,29 and 30 are adapted to pass, as-shown in Fig.. 11, and in order toform suitable connection for the lead wires there are arranged nnts andwashers at either end of each bolt.

lThe members 24, which pass upward through 'the connector are providedat their llower ends with suitable washers and nuts so that they may beproperly 'held in place, and tov form connecting means for the down--wardly extending wires.

As shown in Fig. 11 and 12, there are three rods 24, to which threewires are connected. and which form a secondary cable 32, which leadsdown through an insulator $53, and is connected to tbeftransformer asshown in Figs.` S and 9. These connections are made with the secondarycoils of the transformer as shown diagrammatically in Fig. 10. Theprimary cable 33 extends upwardly through a pipe 34, and is connectedAat its lower endi'to the primary cable which is laidin asuitablevconduit.

r'he upperdend of the pipe 34, is secured inajsection 35, whichis/fa'stened in any suitable way to the 'end of 'the pole. Above thesection 35` and secured in place in the pole is a table 36, which hasextending therefrom a pipe 37, the connection of the pipe with the table36, being very tight so as to hold the oil 38, in the pole. This oil, asshown completely covers the transformer and acts as an insulating andcooling medium. Thepipe 37, admits the primary cable 33', which leadsupwardly and has a Similar nuts readily accessible when the door l2, isre moved from the pole. This door is provided with a flange 43. whichextends around the entire door vand provides means whereby suitablescrewsmay fasten the doorto t-he pole. The lower end of the door has alng 4l. which projects downwardly and inside of one edge of the opening.At the upper `portion of the door. a lock 15is provided so that whenthedoor is in position'and locked, it will be impossible for anyone cxceptthe authorized person to open the same.

lVhen desired. insulation 39AV` such as liber and the like may beprovided on the inside of the pole and door so. that when the fuses blowout any arcs which are formed will not be grounded through the metallicpole.

As shown in Figf'l. section 1G. has a member 46, in engagementtherewith. which member is secured to a ring. 4i'. semiclrcular member+3. is provided with nuts and bolts at either end thereof` which passthrough the member lo, and serve the purpoSe of clamping the members loand 4N. .to the section 16 of the pole. The rin;r 4T. 1s arranged' tosupport a cap'lf. asshown in Fig. 2, which forms a protection for theConnections. This cap 49. is l)rovidcd with a pluralityY of slots 50. soas to admit the secondary cables as shown. These cable-4 also passthrough openings in the rin;r t7. and are thus heldin place. ,l

Just below the door and situated above the level ofthe oil l havearranged a plate 51. which may be loosely supported in any suitablemanner in order `that it may be rcmovcd when it is desired to lift thetransformer from the pole.

Referring .now to the transformer shown structurally in -Figs 5.- to 9.inclusive. and diagrannnatically in Fig. 10. it will be ooserved thatthe transformer comprises a core which hasthree primary coils, and twosecondary coils disposed upon a bridge member The core is Supportedbyineans of two pairs of angle-bars tand which are joined togetherat'the bottom bv suit able bolts 56 and 5T. and at the topby bolts 5Sand 59. so that the saidangle-bars form a sort of framework for the coreand coils. Shields (30 and 61. are retained upon the angle-bars 54 andby means of bolts G2,

from the pole and out through the opening closed by the door.

t thetop otl the said angle-hars 5l and 55. there are arranged suitablehandles til and (i5. which are held in place bv bolts and ISS). Thesehandles are adapted to be grasped when it is desired to remove thetransformer. As shown in Fig. T, the said angle-hars 5l and have endportions at right angles thereto and which torni flat surfaces engagingthe table 36. The primary wires aa shown in ltigs. ti and are Supportedby pieces ot' liber ('it and (ST. tht-se being held to the bolt till, bymeans ol screws (3S, which pass through a clamping plate (S9, and in tolinother plate 70.

0n the opposite side olE the transformer the ,eecondarv wirca4 aresupported b v inaulators 'T1 and 7:2, tht-Fe being held in place uponthe bolt (3?). h v means ot clamping Screws 73. which pass through aclan'iping plate Tft. and into a `Smaller plate T5. these wires beingconnected with two eecomlaiwY coils upon the transformer. 1t will be ob.served that thinl trai-informer doess not occupv a great deal of space.and the arrangement is auch that the oil 3H, completely covers it.

s shown diagrammatically in Fig. l0 the transformer ia provided withthree primar v coils, which mav be connected either in series or inmultiple, as deaired, and there are two secondary coils which arearranged with three lead wires, which. as before described. laidupwardb7 through the pole and connect with the connector at the topthereot in order that consumers ma)v be Supplied with the current at theproper voltage.

It will he apparent that, inatead of having merelyr the secondary wiresleading up to the top ot' the pole. both the secondary and the priinaijvwireal ma)v be connected at the top ot' auch pole if desired, or theconditionsI may be reversed as shown in the drawings. The primarv ma)Ybe led up to the top of the pole and have suitable connections with theprimary cable. and the secondaryv wires ma)Y be led down to the econdarycable which may be led in a COD- duit provided for that puri'ioFe.

The eseential feature ot my invention iS to provide `a pole which isornamental in its nature, and at the same time is ot a construction suchas to completely inclose the transtorn'ier and the various connectionsto the overhead wireS. and at the same time provide such a pole withreadv meanQ ot' access to such transformer and the connections, such asthe fuse blocks comiected therewith.

From the foregoix'ig description, it will be seen that my inventioncomprises; a transformer pole, in which the transl't'nn'ier is (liSpoSedso that the pole act,`4 to mme e,\tent as a lightning arre ter. the poition olI the transformer being uch that it can bc czoilv installed andremoved with ver): little dillicultv. 'the arrangement i .wel 'hat thecapacit) ot` the transformer per unit oln active weight is rclatiwlvlarge owing to the large amount oll |iace available l'or oil within thepole.

llrliile l have described the lapecitic cmliodin'ient ot'mv invention. ldo not wieh to be limited to the precise construction shown, but desireto secure prr'i'tection upon the feature ot disposing the transformerwithin a pole and having .auch ti';iii. t'oi'liit-r suitably connectedto anv .aonrce ot' power in order to eeeure the lower voltage for use indistribution to consumers.

'hat l claim iet:

1. ln a s vstem of alternating current diS- tribution, the combinationot' an linderground conduit. a long rigid upright hollow metallic pole.an alternating current tranaformer comprising an iron ycore bear ing twoinductiwlv related windings, located within Said pole. the saidtransformer extendingV upon certain radii substantially from one innerwall ol' the pole to the other and on other radii leaving substantialinterstices between the transformer and the inner wall of the pole.conductors connected to one ot the transformer winding` leading throughthe hollow' interior ot the pole and Vtrom the base thereof into saidconduit, and coiuluctora` connected to the other transformer windingleading through the hollow interior ot the pole to the top of the poleand thence aeriall'v to distant points, and a bod)v ot oil containedwithin the pole and in direct contact' with the walhl thereof and inwhich botlv ot oil the transformer is immersed. wherelrv the transformeris protected from moisture within the pole and conduit and fromlightning dieichargcA into the pole. and whereb)v the heat liberatedwithin the transformer is con veved b v convection curl-enteA ot' oiltraversing said interstices trom the trans't'ormer to the long uprightmetallic wallsl ot. the pole.

ln a svatcm ot' alternating current diav tribution. the conlbination ofa long rigid hollow metallic pole adapted to be set upright in or uponthe artl1. an alternating current transformer comprising an iron corebearing two inductivelv related windings, located within .aaid pole.primar)7 and secondary conductora.connected to said transformerwindings` leading from said transformer through thel hollow interiorofthe pole. certain of V aid conductors extending aeriallv from the topof the pole to distant points. and a bodv ot oil contained within thepole and in direct contact with the v. alls thereol' and in which bodyof oil the trans former is immersed, whereby the transmy name this 27thday of December, A. D. former is protecteiL from lightningr dis- 1912 1charges into said pole, und whereby the heat; FDMUWD O SCHVEITZERliberated in the transformer is conveyed by A l 5 convection currents ofoil to the long up- 'Ytnesses:

right niet'nlie walls of the pole. LEONARD V. NOVANDER,

In witness whereof, vI hereunto subscribe LESLIE Fiucmz.

